Pittsburgh in september: average Weather, Temperature and Climate
Weather in Pittsburgh in september 2025
The weather in Pittsburgh in september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 6
Weather at 6am
61°F
Clear/Sunny
37% of time
21%
16%
12%
Weather at 12pm
77°F
Clear/Sunny
37% of time
27%
17%
13%
Weather at 6pm
67°F
Clear/Sunny
45% of time
25%
15%
8%
Weather at 3am
59°F
34%
24%
20%
15%
Evolution of daily average temperature and precipitation in Pittsburgh in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Pittsburgh in september.
The climate of Pittsburgh in september is good
The climate in september in Pittsburgh is wet (with 5.2in of rainfall over 6 days). Unfortunately, the weather conditions is worsening than the previous month since in august there is an average of 5.1in of precipitation over 9 days.
The climate quite enjoyable here the month of september. The thermometer averaged maximum of 79°F. The minimum is 61°F. Thus, the mean temperature average in september in Pittsburgh is 70°F. These temperatures are far removed from those records observed in Pittsburgh in the month of september with a maximum record of 99°F in 2018 and a minimum record of 40°F in 2012. You can hope to have about 29 days with temperatures over 65°F, or 97% of the month. And about 5 days with temperatures over 86°F.
On this month of september, day length in Pittsburgh is generally 12:27. The sun rises at 06:01 and sets at 18:28.
With a good climate, this month is recommended to go in that area.
Seasonal average climate and temperature of Pittsburgh in september
Check below seasonal norms These datas are compiled from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 70°F | ||||
| Highest temperature | 79°F | ||||
| Lowest temperature | 61°F | ||||
| Highest record temperature | 99°F (2018) | ||||
| Lowest record temperature | 40°F (2012) | ||||
| Number of days at +86°F | 5 day(s) (17%) | ||||
| Number of days at +65°F | 29 day(s) (97%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 12km/h | ||||
| Wind temperature | 59°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.2in | ||||
| Number of days with rainfall | 6 day(s) (21%) | ||||
| Record daily rainfall | 5.4in (2018) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 88% | ||||
| Visibility | 8.73km | ||||
| Cloud cover | 36% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:01 | ||||
| Time of sunset | 18:28 | ||||
| Length of day | 12:27 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Pittsburgh in september 2024:
65°F to 83°F
54°F to 74°F
49°F to 76°F
54°F to 81°F
54°F to 81°F
56°F to 85°F
56°F to 67°F
45°F to 68°F
49°F to 76°F
54°F to 81°F
58°F to 85°F
59°F to 85°F
59°F to 83°F
59°F to 85°F
61°F to 85°F
59°F to 76°F
59°F to 65°F
59°F to 76°F
58°F to 76°F
59°F to 86°F
70°F to 83°F
67°F to 81°F
65°F to 76°F
65°F to 72°F
65°F to 79°F
65°F to 77°F
68°F to 79°F
68°F to 72°F
67°F to 76°F
59°F to 61°F
Map: other cities in the United States (USA) in september
Cities near Pittsburgh:
| Cleveland in september | good weather |
| Buffalo in september | good weather |
| Niagara Falls in september | good weather |
| Washington D. C. in september | good weather |
| Baltimore in september | good weather |
| Maryland in september | good weather |
| Detroit in september | good weather |
| Virginia in september | good weather |
| Cincinnati in september | good weather |
| Philadelphia in september | good weather |
| Wildwood in september | good weather |
| New Jersey in september | perfect weather |
Click over cities on the map for information about the weather in september.
Pittsburgh
perfect weather
good
tolerable
bad
very bad
Weather data for Pittsburgh in september:
Weather data for Pittsburgh for september are derived from an average of the weather forecast since 2009 in Pittsburgh. There is a margin of error and these forecasts are to be considered as general information only. The weather in Pittsburgh can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Pittsburgh.